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EFFECT OF IRRIGATION INTERVAL, LEVEL OF IRRIGATION WATER AND EMITTER DISCHARGE ON DISTRIBUTION OF OKRA ROOTS PLANTED IN CLAYEY SOIL | ||
| AL-TAQANI | ||
| Article 1, Volume 23, Issue 2, 2010, Pages 185-203 | ||
| Abstract | ||
| The field experiment was performed to study the effect of irrigation interval , irrigation level and emitter discharge on distribution of okra roots , which was planted in clayey soil by using drip irrigation system . The study was designed as a factorial experiment within split – plot design using RCBD in three replicates , A ( irrigation interval ) was put in main plots and combination between B (irrigation level ) and C( emitter discharge ) was put in sub – main plots . The results showed increasing the number of secondary roots as a result of decreasing irrigation interval and increasing irrigation level ,emitter discharge . The results showed increasing the mean of main root depth for treatments of irrigation interval (3 day) comparatively with treatments of irrigation interval (5 day) . There were a significant differences between irrigation levels used in terms of the length of main root of the crop. Maximum root density was at the depth of 5 –10 cm for all treatments . The secondary roots grown for a horizontal distance of 30 , 25 and 20 cm away from the main root for the irrigation levels 100% EP, 75%EP, 50%EP, respectively . | ||
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